code: def test_is_in_df() -> None:
      df = pl.DataFrame({"a": [1, 2, 3]})
      assert df.select(pl.col("a").is_in([1, 2]))["a"].to_list() == [
          True,
          True,
          False,
      ]
  
imports: from __future__ import annotations
  from datetime import date
  import pytest
  import polars
  from polars import StringCache
  from polars.testing import assert_frame_equal, assert_series_equal
label_desc: Use image node_id 10 for calling a global function with example usage: test_is_in_df() without return types